loiter vs procrastinate

loiter

verb
  • To remain at a certain place instead of moving on. 

  • To stand about without any aim or purpose; to stand about idly. 

  • For an aircraft to remain in the air near a target. 

noun
  • A standing or strolling about without any aim or purpose. 

procrastinate

verb
  • To delay taking action; to wait until later. 

  • To put off; to delay (something). 

How often have the words loiter and procrastinate occurred in a corpus of books? (source: Google Ngram Viewer )